Hide phase overview at initiative level SAP PPM

Hi PPM Experts,

My client is working in SAP PPM5.0.

Initiatives are used to aggregate financial and capacity planning data of portfolio items from different types.

There is no need to deal with phases and decision points at initiative level.

In standard, when I create an initiative, phases are automatically created by copy of decision points.

As a result, decision points are duplicated at initiative header.

Is there a way to hide phases created at initiative level?

Thanks for your input!!

S.